package com.health.pay.service;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.request.AlipayTradeQueryRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.health.pay.config.AlipayConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;



@Service
@Slf4j
public class AliOrderService {

    @Autowired
    private AlipayConfig alipayConfig;

    //获取支付html页面
    public String createOrder(Long orderId, Long totalPay,String orderName, String desc){
        AlipayClient alipayClient = new DefaultAlipayClient(alipayConfig.getGatewayUrl(),
                alipayConfig.getAppId(), alipayConfig.getMerchantPrivateKey(),
                "json", alipayConfig.getCharset(),
                alipayConfig.getAlipayPublicKey(), alipayConfig.getSignType());

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(alipayConfig.getReturnUrl());
        alipayRequest.setNotifyUrl(alipayConfig.getNotifyUrl());

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ orderId +"\","
                + "\"total_amount\":\""+ totalPay +"\","
                + "\"subject\":\""+ orderName +"\","
                + "\"body\":\""+ desc +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求
        String result;
        try {
           result= alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
            result=e.getMessage();
        }
        return result;
    }

    //获取支付宝GET过来反馈信息--从支付页面跳转到该路径
    public String returnUrlCheck(HttpServletRequest request) throws Exception{
        HashMap<String, String> params = new HashMap<>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }
        //调用SDK验证签名
        boolean signVerified = AlipaySignature.rsaCheckV1(params,
                alipayConfig.getAlipayPublicKey(),
                alipayConfig.getCharset(), alipayConfig.getSignType()); //调用SDK验证签名

        //——请在这里编写您的程序（以下代码仅作参考）——
        if(signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"),"UTF-8");
            //相关业务：
            //校验用户支付金额与订单对应金额是否一致
            //更新订单状态
            return "trade_no:"+trade_no+"<br/>out_trade_no:"+out_trade_no+"<br/>total_amount:"+total_amount;
        }else {
            return "验签失败";
        }
    }

    //获取支付宝POST过来反馈信息
    public String notityUrlCheck(HttpServletRequest request) throws Exception{
        //获取支付宝POST过来反馈信息
        Map<String,String> params = new HashMap<String,String>();
        Map<String,String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        //调用SDK验证签名
        boolean signVerified = AlipaySignature.rsaCheckV1(params, alipayConfig.getAlipayPublicKey(), alipayConfig.getCharset(), alipayConfig.getSignType());

        //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
	1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
        if(signVerified) {//验证成功
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"),"UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"),"UTF-8");

            if(trade_status.equals("TRADE_FINISHED")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序

                //注意：
                //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
            }else if (trade_status.equals("TRADE_SUCCESS")){
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序

                //注意：
                //付款完成后，支付宝系统发送该交易状态通知
            }

            return "success";

        }else {//验证失败
            return "fail";
            //调试用，写文本函数记录程序运行情况是否正常
            //String sWord = AlipaySignature.getSignCheckContentV1(params);
            //AlipayConfig.logResult(sWord);
        }
    }

    /**
     *查询订单状态
     * @param orderId 订单ID
     * @param tradeNo 交易码
     * @return 返回查询结果html
     *
     */
    public String queryTradeStatus(String orderId,String tradeNo) throws Exception{
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(alipayConfig.getGatewayUrl(),
                alipayConfig.getAppId(),
                alipayConfig.getMerchantPrivateKey(), "json",
                alipayConfig.getCharset(),
                alipayConfig.getAlipayPublicKey(), alipayConfig.getSignType());

        //设置请求参数
        AlipayTradeQueryRequest alipayRequest = new AlipayTradeQueryRequest();

        //商户订单号，商户网站订单系统中唯一订单号
        String out_trade_no = orderId;
        //支付宝交易号
        String trade_no = tradeNo;
        //请二选一设置

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","+"\"trade_no\":\""+ trade_no +"\"}");

        //请求
        String result = alipayClient.execute(alipayRequest).getBody();

        return result;
    }

    public String TradeRefund(HttpServletRequest request) throws Exception{
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(alipayConfig.getGatewayUrl(),
                alipayConfig.getAppId(), alipayConfig.getMerchantPrivateKey(),
                "json", alipayConfig.getCharset(), alipayConfig.getAlipayPublicKey(),
                alipayConfig.getSignType());

        //设置请求参数
        AlipayTradeRefundRequest alipayRequest = new AlipayTradeRefundRequest();

        //商户订单号，商户网站订单系统中唯一订单号
        String out_trade_no = new String(request.getParameter("WIDTRout_trade_no").getBytes("ISO-8859-1"),"UTF-8");
        //支付宝交易号
        String trade_no = new String(request.getParameter("WIDTRtrade_no").getBytes("ISO-8859-1"),"UTF-8");
        //请二选一设置
        //需要退款的金额，该金额不能大于订单金额，必填
        String refund_amount = new String(request.getParameter("WIDTRrefund_amount").getBytes("ISO-8859-1"),"UTF-8");
        //退款的原因说明
        String refund_reason = new String(request.getParameter("WIDTRrefund_reason").getBytes("ISO-8859-1"),"UTF-8");
        //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传
        String out_request_no = new String(request.getParameter("WIDTRout_request_no").getBytes("ISO-8859-1"),"UTF-8");

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"trade_no\":\""+ trade_no +"\","
                + "\"refund_amount\":\""+ refund_amount +"\","
                + "\"refund_reason\":\""+ refund_reason +"\","
                + "\"out_request_no\":\""+ out_request_no +"\"}");

        //请求
        String result = alipayClient.execute(alipayRequest).getBody();

        //相关业务：
        //解析结果，如果退款成功，则返回修改订单状态

        return result;

    }


    private class AlipayClient {
    }

    private class DefaultAlipayClient extends AlipayClient {
        public DefaultAlipayClient(Object gatewayUrl, Object appId, Object merchantPrivateKey, String json, Object charset, Object alipayPublicKey, Object signType) {
            super();
        }
    }
}
